10 WWE Superstars who you didn't know were with the company for so long

#3 Sheamus, signed in 2006

Raw tag team champion Sheamus showboats to the crowd

When you think of the most successful active WWE superstars, Sheamus probably doesn't come to mind immediately. But he's having one of the quietest Hall of Fame careers someone could possibly have. He's an Intercontinental title reign away from being a grand slam champion, he's a 4-time world champion, and a former Royal Rumble, Money in the Bank, and King of the Ring winner.

Perhaps Sheamus flying under the radar is due to him not being as captivating as he could be. After all, his last world title reign was far from memorable, even if it did serve to get Roman Reigns over as a babyface for the first time ever. And with the Celtic Warrior flying under the radar, you may not realise how long his career has actually been.

He signed in 2006 and started in FCW before moving up to ECW in 2009 and becoming one of their biggest stars. It wasn't long after that that Sheamus captured his first world title, defeating John Cena for the WWE Championship just 166 days after his debut on the main roster.

Sheamus has had an incredible career, but since he spent 3 years in developmental and his ECW days are perhaps forgotten by some, it may not seem like his career has already lasted over a decade.